The ability for it run multiple programs at one time! It was very helpful when I had several employees who needed help from different departments within my organization (payroll & benefits).
Sometimes you can get confused if there's an issue but usually they will walk through what needs done next or email back so that helps out alot!! nothing really specific dislike about this program other than sometimes people don't know how things should function which makes them frustrated as no explanation given unless asked directly by someone else involved like myself.